Grant E. Barber, MD, MS Expert Witness
Curriculum Vitae

Stanford GI Faculty | Harvard MD| IBD & Procedures

Contact this Expert Witness

  • Company: Stanford University Hospital
  • Phone: (608) 320-5586
  • Cell: (608) 320-5586

Specialties & Experience of this Expert Witness

General Specialties:

Gastroenterology and Legal Medicine

Keywords/Search Terms:

surgical timing, Crohn's Disease, Bowel Perforation, Ischemic colitis, Ulcerative Colitis, Causation, Standard of Care, Biologics Management, Toxic Megacolon, Management of Refractory IBD, Inflammatory Bowel Disease, Colonoscopy, Intestinal Ultrasonography, Complications of Biological Therapies, IBD, EGD, complications

Education:

MD, Harvard Medical School; MS, Stanford University Hospital; Advanced IBD Fellowship, Stanford University Hospital

Years in Practice:

4

Additional Information

Dr. Barber is a board‑certified academic gastroenterologist trained at Harvard Medical School and Stanford University, where he is now faculty. He oversees a high‑volume procedural practice (>400 colonoscopies annually) and manages more than 400 tertiary‑level IBD patients requiring advanced biologic and small‑molecule therapies, endoscopic intervention, and intestinal ultrasonography. He developed and directs the Stanford IBD Inpatient Consult Service and serves on the GI Clinical Competency Committee and GI Quality Council, where he helps establish and monitor clinical and procedural safety standards. His expertise includes: • Procedural Standards: Recognition and management of perforations, post‑procedural hemorrhage, and sedation‑related events • IBD Management: Biologic initiation/monitoring (anti‑TNF, IL‑12/23, JAK inhibitors, S1P modulators, integrin inhibitors), refractory disease, and surgical timing • Diagnostic Accuracy: Delayed diagnosis in colorectal cancer, IBD, ischemic colitis, and toxic megacolon Dr. Barber provides objective, evidence‑based merit reviews and expert testimony for both plaintiff and defense. He is known for translating complex GI concepts into clear, persuasive testimony for depositions and trial. Nationwide consultations and expedited 72‑hour reviews are available. - Contact preference: Email preferred for initial inquiries at gbarber@stanford.edu